This infrared thermometer (1) includes: a main unit (1R) incorporating an infrared sensor (3)； a proximity sensor (100) for detecting that the main unit (1R) has been positioned in proximity to a human body； and a controller (83) which calculates body temperature based on quantity of infrared from the infrared sensor (3) when the proximity sensor (100) has detected positioning of the main unit (1R) in proximity to a human body. The proximity sensor (100) includes a ground electrode (5), and a plurality of segmented electrodes (7, 7B, 7C, 7D) arranged about the perimeter of the ground electrode (5). The controller (83) measures electrostatic capacitance between the ground electrode (5) and the segmented electrodes (7, 7B, 7C, 7D) when positioned in proximity to a human body, and measures the distance between the main unit (1R) and the human body, to thereby detect tilt of the main unit (1R) with respect to the human body.紅外線體溫計(1)，是具備：將紅外線感測器(3)內藏的本體部(1R)、及檢出本體部(1R)接近人體用的接近感測器(100)、及依據藉由接近感測器(100)檢出本體部(1R)接近人體時的來自紅外線感測器(3)的紅外線的量算出體溫的控制部(83)。接近感測器(100)，是具備：接地電極(5)、及被配置於接地電極(5)的周圍的複數分割電極(7、7B、7C、7D)。控制部(83)，是藉由在接近人體時測量接地電極(5)及各分割電極(7、7B、7C、7D)之間的靜電容量，測量本體部(1R)及人體之間的距離來檢出對於本體部(1R)的人體的傾斜。
